Abstract
The movement of a pedestrian bridge retrieved by means of image processing technique has been analysed in this paper. An optical target has been attached to the deck and its oscillation has been tracked with fast cameras. The movement of the bridge has also been measured with a radar interferometer and this result has been taken as the reference signal. Using these data, a parametric study of the errors introduced by the image-based methods has been performed. The influence of some variables in the measurement error such as the distance to the target, the image size, the type of camera or the movement amplitude has been analysed for four different distances, and two types of excitations. Results show that the relative error decreases with the amplitude and the target diameter and it increases with the target distance. Additionally, the maximum relative error obtained in most of the analysed cases is below 10 %.
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Wahbeh, A.M., Caffrey, J.P., Masri, S.F.: A vision-based approach for the direct measurement of displacements in vibrating systems. Smart Mater. Struct. 12, 785–794 (2003)
Lee, J.J., Shinozuka, M.: A vision-based system for remote sensing of bridge displacement. NDT&E Int. 39, 425–431 (2006)
Genturk, B., Hossain, K., Kapadia, A., Labib, E., Mo, Y.-L.: Use of digital image correlation technique in full-scale testing of prestressed concrete structures. Measurement 47, 505–515 (2014)
Malesa, M., Kujawinska, M.: Deformation measurements by digital image correlation with automatic merging of data distributed in time. Appl. Optics 52(19), 4681–4692 (2013)
Verbruggen, S., Aggelis, D.G., Tysmans, T., Wastiels, J.: Bending of beams externally reinforced with TRC and CFRP monitored by DIC and AE. Composite Struct. 112, 113–121 (2014)
Shah, S.G., Chandra Kishen, J.M.: Fracture properties of concrete-concrete interfaces using digital image correlation. Exp. Mech. 51(3), 303–313 (2011)
Busca, G., Cigada, A., Mazzoleni, P., Zappa, E.: Vibration monitoring of multiple bridge points by means of a unique vision-based measuring system. Exp. Mech. 54, 255–271 (2014)
Mas, D., Espinosa, J., Roig, A.B., Ferrer, B., Perez, J., Illueca, C.: Measurement of wide frequency range structural microvibrations with a pocket digital camera and sub-pixel techniques. Appl. Optics 51(14), 2664–2671 (2012)
Ferrer, B., Acevedo, P., Espinosa, J., Mas, D.: Targetless image-based method for measuring displacements and strains on concrete surfaces with a consumer camera. Constr. Build. Mater. 75, 213–219 (2015)
Chien-Chou, C., We-Hwa, W., Hong-Zeng, T., Chi-Ong, C., Gwolong, L.: Application of digital photogrammetry techniques in identifying the mode shape ratios of stay cables with multiple camcorders. Measurement 75, 134–146 (2015)
Fukuda, Y., Feng, M.Q., Narita, Y., Kaneko, S., Tanaka, T.: Vision-based displacement sensor for monitoring dynamic response using robust object search algorithm. IEEE Sens. J. 13(12), 4725–4732 (2013)
Tubbs, R.N.: Lucky exposures: diffraction limited astronomical imaging through the atmosphere. Dissertation submitted in candidature for the degree of Doctor of Philosophy in the University of Cambridge. St Johns College Cambridge University (2003)
https://www.meteoblue.com/es/tiempo/pronostico/seeing/alicante_espa%F1a_2521978. Accessed 30 Jan 2016
Roig, A.B., Espinosa, J., Perez, J., Ferrer, B., Mas, D.: Three-dimensional planar object tracking with sub-pixel accuracy. Optik 126(20), 2684–2689 (2015)
Gentile, C., Cabboi, A.: Vibration-based structural health monitoring of stay cables by microwave remote sensing. Smart Struct. Syst. 16(2), 263–280 (2015)
Atzeni, C., Bicci, A., Dei, D., Fratini, M., Pieraccini, M.: Remote survey of the leaning tower of Pisa by interferometric sensing. IEEEGRSL7 1, 185–189 (2010)
Negulescu, C., Luzi, G., Crosetto, M., Raucoules, D., Roullé, A., Monfort, D., Pujades, L., Colas, B., Dewez, T.: Comparison of seismometer and radar measurements for the modal identification of civil engineering structures. Eng. Struct. 51, 10–22 (2013)
Luzi, G., Crosetto, M., Cuevas-González, M.: A radar-based monitoring of the Collserola Tower (Barcelona). Mech. Syst. Signal Process. 49, 234–248 (2014)
Coppi, F., Gentile, C., Ricci, P.: A software tool for processing the displacement time series extracted from raw radar data. In: Proceedings of the Ninth International Conference on Vibration Measurements by Laser and Non-contact Techniques, AIP Conference Proceedings 1253, E.P.Tomasini (Ed.), Ancona, Italy, pp. 22–25 (2010)
https://en.wikipedia.org/wiki/Bayer_filter. Accessed 28 February (2016)
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The authors acknowledge the support of the Generalitat Valenciana through the project PROMETEO II/2015/015 and GV/2015/116 and the University of Alicante through the project GRE13-10
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Ferrer, B., Mas, D., García-Santos, J.I. et al. Parametric Study of the Errors Obtained from the Measurement of the Oscillating Movement of a Bridge Using Image Processing. J Nondestruct Eval 35, 53 (2016). https://doi.org/10.1007/s10921-016-0372-6
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DOI: https://doi.org/10.1007/s10921-016-0372-6